磨损

It is suggested that worn surface of PEN tape by sand dust particles showed bi-fractal characteristics.Ploughing and cutting by sand particles and micro-fracture were found to be the two main mechanisms for each fractal characteristics in large and small scale.

结果表明：经过沙尘磨粒磨损的PEN薄带表面形貌表现出二重分形特征，沙尘粒子的犁沟和切削磨损及PEN材料的微观断裂是引起大尺度和小尺度区间分形特征的主要机理。

The wear on bottom of mill is heavier than on side. Main worn form on bottom of mill is diamond fallen of bond and side is broken diamond.

刀具底面的磨损比侧面严重，底面金刚石主要以脱落为主，侧面金刚石磨损以冲击破碎为主。

Orthogonal experimental method is applied to design experiments of diamond tool wear.B asalt is milled on CNC stone machine with electroplated diamond mill.The diamond mill is made with elec-troplated method and lost maSS of diamond mill is measured with high precise balance.

采用正交实验方法设计金刚石铣刀磨损实验，在数控石材机床上铣削玄武岩，金刚石铣刀采用电镀法制造，铣刀磨损量采用高精密度电子天平测量。

Orthogonal experimental method is applied to design experiments of diamond mill wear. Basalt is milled on CNC stone machine with electroplated diamond mill. The diamond mill is made with electroplated method and lost mass of diamond mill is measured with high precise balance.

采用正交实验方法设计金刚石铣刀磨损实验，在数控石材机床上铣削玄武岩，金刚石铣刀采用电镀法制造，铣刀磨损量采用高精密度电子天平测量。

Drilling time will be lasted and lateral force on casing exerted by drill pipe will increase in case of drilling deep well, ultradeep well, high inclined hole, extended reach well and horizontal well, therefore, friction and wear between casing and drill pipe became a severe problem.

钻杆接头与套管摩擦磨损问题的理论与试验研究套管磨损

The results showed that the wear-resistant belt in drill joint was actually an isolation belt, which could protect the drill joint and sleeve from serious abrasion, and the optimization and improvement of its performance was the technical key to preventing sleeve from serious abrasion.

结果表明，钻杆接头耐磨带实质上是一个隔离带，用以保护钻杆接头和套管免遭强烈磨损，接头耐磨带性能的优化与改善是防止套管强烈磨损的关键技术措施。

The erosion wears mechanism and the effects of different abrasives on the wear of ceramic nozzle s are investigated.

研究了陶瓷喷嘴材料的冲蚀磨损机理以及不同冲蚀磨料对陶瓷喷嘴冲蚀磨损的影响。

Imitating the non-smooth shape of biont surface,the non-smooth surfaces with different shape and distributing distance were obtained on the H13 die steel by laser.

模仿生物体表的非光滑形态，利用激光在H13模具钢表面加工出各种形态和分布间隔的非光滑单元体，研究非光滑单元体形态、分布间隔对模具钢磨损性能的影响，并探讨非光滑表面材料的磨损机理。

The Corrosive wear properties of Ni60 +20%WC alloy coatings by laser cladded process have been measured and wear-corrosion surface morphologies in diffirent impact velocities and sulphuric-acid concentrations have been studied by SEM.

测定了Ni60＋20％WC合金激光熔敷层的腐蚀磨损性能，用扫描电镜研究了冲击速度和介质浓度对腐蚀磨损表面形貌的影响。

It has been found that wear of the claddings is characterized by plastic deformation and local accumulation in the subsurface region at the early sliding stage. Then cracks were generated in the borders of different phases and grains. The cracks tended to extend, grow, and finally detach from the surface layer of the cladding, with the formation of wear debris.

结果表明，在常温滑动干摩擦条件下，堆焊层的磨损失效机制表现为表层的塑性变形及局部积累，随后磨损裂纹在亚表层相界面和晶界处形成并扩展和连通，最后发生表层材料分离的过程。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐